Abstract: A welding gun attachment which converts a straight grip handle of a mig gun to a pistol grip handle. The pistol grip handle trigger is mechanically linked to the straight grip handle trigger so that movement of the pistol grip trigger causes corresponding movement of the straight grip trigger.

Abstract: A power block adapted to couple a water-cooled power cable of a welding torch or the like to a power source and a water conduit. The power block comprises an electrically conductive housing which defines an aperture for receiving a post of a power supply, and a pair of angularly disposed cylindrical ports for receiving and retaining a water conduit and a water-cooled power cable. By virtue of the angular relationship between such ports, there is minimal stress on the water-containing sleeves of the water conduit and power cable, and lower torque about the power post tending to loosen the power block from engagement with the post. Preferably, the power block housing defines a third port having a quick-connect/disconnect feature for receiving and retaining a second power cable.

Abstract: A device for splicing together two lengths of fluid-cooled, electric cable of the type comprising an electrical conductor surrounding by a flexible conduit through which a cooling fluid, e.g., water, can flow for the purpose of conducting thermal energy away from the cable while the cable conducts high current. The splicing device comprises an electrically-conductive tubular member having a pair of spaced holes in the tube wall. The tubular member is adapted to be crimped at both ends upon the respective ends of the conductor portion of two lengths of such cable, and the outside diameter of such member is substantially equal to the inside diameter of the flexible conduit portion of the cable so that the respective ends of the conduit portion of such two lengths of cable can snugly slide over the tubular member from opposite ends. The holes are located in the tubular member to allow fluid to flow substantially uninterrupted from one cable length, through the tubular member, to the other cable length.